Home / 2,914.86-4,020.70-1,780.02

Finding the Fourth Proportional to 2,914.86, 4,020.70 and 1,780.02

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Solution

The fourth proportional to 2,914.86, 4,020.70 and 1,780.02 is: 2,455.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,914.86 : 4,020.70 = 1,780.02 : x
  2. Step 2: Convert to fraction form
    2,914.86/4,020.70 = 1,780.02/x
  3. Step 3: Cross multiply
    2,914.86x = 4,020.70 × 1,780.02
  4. Step 4: Simplify right side
    2,914.86x = 7,156,926.41
  5. Step 5: Solve for x
    x = 7,156,926.41/2,914.86
  6. Step 6: Final answer
    x = 2,455.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.